JP2013056570A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a seat body to be quickly moved to a vehicle interior direction when the seat body is not occupied, and to reduce electric power consumption.SOLUTION: A seat movement device for a vehicle seat is configured so that the seat movement device can be switched between an automatic mode in which the seat body is moved along a predetermined movement path utilizing a torque of a drive source 458 and a manual mode in which the seat body is moved along the movement path by applying manual force to the seat body. When the seat movement device is switched to the manual mode, a rotating section 452 of the seat movement device is connected to a mechanism 459 for permitting rotation in one direction, the rotating section rotating when the seat body moves along the movement path. As a result, the movement of the seat body in the direction toward the vehicle interior is permitted and the movement of the seat body in the opposite direction is prohibited.

Description

  The present invention relates to a vehicle seat including a seat moving device that moves a seat body between a predetermined position in a vehicle interior and a boarding / exiting position outside the vehicle interior.

A vehicle seat related to this is described in Patent Document 1.
As shown in FIG. 10, the vehicle seat 100 includes a seat body 102 used as a passenger seat, and the seat body 102 is turned about 90 ° leftward from a predetermined position I in the passenger compartment to the entrance / exit 104 side. And a seat moving device (not shown) configured to be moved from the entrance / exit 104 to the entrance / exit position II outside the passenger compartment.
Further, the seat body 102 is provided with a seating sensor (not shown) that detects the presence or absence of a seated person. When a seated person is not detected by the seating sensor, that is, when no person is seated on the seat body 102 (when it is empty), the seat moving device 102 is more seated than when the seated person is seated. It is configured so that the moving speed can be increased. For this reason, for example, it is possible to shorten the time for moving the empty seat body 102 to the predetermined position I in the vehicle interior after the seated person is lowered at the boarding / exiting position II outside the vehicle interior, and the usability of the vehicle seat 100 is improved. To do.

JP 2007-161010 A

The seat moving device for the vehicle seat 100 described above is configured such that when the seat body 102 is empty, the seat body 102 can be quickly stored in the vehicle interior at a higher moving speed than when a person is seated. ing. However, for example, in a configuration in which the moving speed of the sheet main body 102 is increased by switching the rotation speed of the motor as a driving source from a low speed to a high speed, it is difficult to increase the moving speed of the sheet main body 102 to a desired speed.
Furthermore, the power consumption of the battery is increased by switching the rotation speed of the motor to a high speed.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is to enable the seat body to move quickly in the vehicle interior direction when the seat body is empty. In other words, the power consumption can be reduced.

The above-described problems are solved by the inventions of the claims.
The invention according to claim 1 is a vehicle seat including a seat moving device that moves the seat body between a predetermined position in the vehicle interior and a boarding / exiting position outside the vehicle interior, wherein the seat moving device uses a rotational force of a drive source. Then, switching between an automatic method for moving the sheet body along a predetermined movement locus and a manual method for manually applying a force to the sheet body and moving the sheet body along the movement locus. When the sheet moving device is switched to the manual method, the rotating portion of the sheet moving device that rotates when the sheet main body moves along the movement locus is allowed to rotate in one direction. It is connected to a mechanism, and is configured to allow movement of the seat body in the vehicle interior direction and prohibit movement of the seat body in the reverse direction.

According to the present invention, when the sheet moving device is switched to the manual method, the rotating portion of the sheet moving device that rotates when the sheet main body moves along the movement trajectory is connected to the one-way rotation permission mechanism, The seat body is allowed to move in the direction toward the passenger compartment.
For this reason, for example, after the seated person gets off the seat body, the seat moving device is switched to the manual system, and the seat body can be quickly moved in the vehicle interior direction. Furthermore, since the seat body can be moved manually toward the vehicle interior, the power consumption of the battery can also be suppressed.
In addition, when switching to the manual method, since the rotating part of the seat moving device is connected to the one-way rotation allowance mechanism, the seat main body can be removed even if the force is removed midway when the seat main body is moved in the vehicle interior direction. There is no problem of descending to the boarding / exiting position.

According to the invention of claim 2, the sheet moving device is switched to the automatic method or the manual method by connecting the rotating portion of the sheet moving device to the drive source or the one-way rotation allowance mechanism by a clutch. Features.
For this reason, the sheet moving device can be easily switched to the automatic method or the manual method.

  According to a third aspect of the present invention, the seat moving device includes an endless track hung on a plurality of wheels, and the wheel is connected to the drive source or the one-way rotation allowance mechanism as the rotating portion. It is characterized by being.

  According to the invention of claim 4, the sheet moving device is screwed into the screw shaft that is configured to rotate around the axis at a fixed position, and along the screw shaft by the rotation of the screw shaft. And a nut configured to be movable, wherein a lead angle between the screw shaft and the nut is configured to manually move the nut along the screw shaft. The rotating portion is connected to the driving source or the one-way rotation allowing mechanism.

  According to the present invention, when the seat body is empty, the seat body can be quickly moved in the vehicle interior direction. Furthermore, power consumption can be reduced.

It is the model perspective view which looked at the vehicle seat which concerns on Embodiment 1 of this invention from diagonally backward of the vehicle. It is the schematic diagram which looked at the said vehicle seat from the back of a seat. It is a perspective view showing the back-and-forth slide mechanism, rotation mechanism, rotation base, etc. of the said vehicle seat. It is the model side view (A figure) showing the drive part of the horizontal slide mechanism of the raising / lowering mechanism in the said vehicle seat, and the top view (B figure) showing the state by which the drive part was connected to the motor side. It is the model side view (A figure) showing the drive part of the horizontal slide mechanism of the raising / lowering mechanism in the said vehicle seat, and the top view (B figure) showing the state by which the drive part was connected to the one-way clutch side. It is a model side view showing operation | movement of the said vehicle seat. It is a model side view showing operation | movement of the said vehicle seat. It is a model side view showing operation | movement of the said vehicle seat. It is a model side view showing the example of a change of the drive part of the horizontal slide mechanism of the raising / lowering mechanism in the said vehicle seat. It is a schematic plan view showing the movement operation | movement of the conventional vehicle seat.

[Embodiment 1]
Hereinafter, based on FIGS. 1-9, the vehicle seat which concerns on Embodiment 1 of this invention is demonstrated. The vehicle seat according to the present embodiment is a vehicle seat used when an elderly person or a disabled person gets on and off the vehicle.
Here, front and rear, right and left and up and down in the figure correspond to front and rear, right and left and up and down of a vehicle including a vehicle seat.

<About the outline of the vehicle seat S>
As shown in FIG. 1 and the like, the vehicle seat S is a seat used as a passenger seat of the vehicle C, and includes a seat body 10 and a seat body 10 between a predetermined position in the passenger compartment and an entry / exit position outside the passenger compartment. And a sheet moving device 200 that moves between them.
The seat moving device 200 includes a front / rear slide mechanism 20 installed on the vehicle floor F, and a rotation mechanism 30 installed on the front / rear slide base 21 of the front / rear slide mechanism 20, as shown in a schematic diagram of FIG. The lift mechanism 50 installed on the rotation base 35 of the rotation mechanism 30 and the outer / inner slide mechanism 70 are provided. The seat body 10 is installed on the outer / inner slide mechanism 70.

<Fore-and-aft slide mechanism 20>
The front / rear slide mechanism 20 of the seat moving device 200 is a mechanism that moves the seat body 10 in the vehicle front-rear direction in the vehicle interior. As shown in FIGS. 2 and 3, the front / rear slide mechanism 20 includes a pair of left and right fixed-side rails 22 installed on the fixed base 23 of the vehicle floor F so as to extend in the vehicle front-rear direction, and those fixed-side rails 22. It is comprised from the front-and-back slide base 21 supported in the state which can be slid back and forth, and the drive part 24 (refer FIG. 2) of the front-and-back slide mechanism 20. As shown in FIG. The drive unit 24 includes a drive motor 24 a installed on the fixed base 23, a screw shaft 24 b rotated by the drive motor 24 a, and a nut portion 24 c fixed to the lower surface of the front and rear slide base 21. . The front / rear slide base 21 is configured to slide back and forth by the screwing action of the screw shaft 24b and the nut portion 24c of the drive unit 24.

<About Rotating Mechanism 30>
As shown in FIGS. 2 and 3, a rotation mechanism 30 is installed on the front / rear slide base 21. The rotation mechanism 30 is a mechanism that horizontally rotates the seat body 10 about 110 ° between a seating position facing the vehicle forward and a lateral position facing the entrance / exit D.
As shown in FIG. 2 and the like, the rotation mechanism 30 includes an inner ring 31a fixed on the front / rear slide base 21, an outer ring 31b supported rotatably with respect to the inner ring 31a, and a rotation base fixed on the outer ring 31b. 35 and a drive unit 32 (see FIG. 2, omitted in FIG. 3) for rotating the outer ring 31b with respect to the inner ring 31a. The drive unit 32 includes a rotary motor 32m and a gear transmission mechanism 32a installed on the upper surface of the front and rear slide base 21. Then, the rotation output of the rotary motor 32m is transmitted to the outer ring 31b via the gear transmission mechanism 32a, so that the rotation base 35 rotates horizontally with respect to the front / rear slide base 21.

<About the outline of the lifting mechanism 50>
An elevating mechanism 50 is installed on the rotation base 35. As shown in FIGS. 6 to 8, the elevating mechanism 50 is a mechanism that elevates and lowers the seat body 10 outside the passenger compartment, and a horizontal slide mechanism 40 that serves as a horizontal movement source (see FIGS. 4, 5, and 8). And a four-joint link mechanism 51 (see FIGS. 7 and 8) that rotates in the vertical direction in response to the slide operation of the lateral slide mechanism 40, and an elevating guide member 57 (see FIG. 3) that guides the four-joint link mechanism 51. ) And an elevating base 55 (see FIG. 7, FIG. 8, etc.) that is moved up and down by the four-bar linkage mechanism 51. The seat body 10 is installed on the lift base 55 via an outer / inner slide mechanism 70 (described later).
As shown in FIG. 3, the lateral slide mechanism 40 includes a pair of guide rails 41 attached in parallel along the left and right edges of the rotation base 35, and a slider 42 that slides along the guide rails 41. A horizontal slide base 44 placed on the slider 42 and a drive unit 450 (see FIGS. 4 and 5, omitted in FIG. 3) for sliding the horizontal slide base 44 along the guide rail 41 are provided. .

<About Drive Unit 450 of Lateral Slide Mechanism 40>
The drive unit 450 of the lateral slide mechanism 40 slides the lateral slide base 44 along the guide rail 41 using an endless track-like chain 451 and sprockets 452 and 453 as shown in FIGS. Mechanism. The drive unit 450 includes a pair of left and right distal sprockets 453 disposed on the rotation base 35 on the distal end side (front end side) of the left and right guide rails 41, and the sliding direction base end portions of the left and right guide rails 41. And a pair of left and right proximal end side sprockets 452 disposed on the side (rear end side). The left and right tip side sprockets 453 are coaxially connected by a horizontal first rotation center shaft 453p, and both ends of the first rotation center shaft 453p are rotatably supported by bearings 453j on the rotation base 35. . The left and right proximal end side sprockets 452 are coaxially connected to each other by a horizontal second rotation center shaft 452p, and both ends of the second rotation center shaft 452p are freely rotatable by bearings 452j on the rotation base 35. It is supported by. A drive gear 455 is attached coaxially to the base end side sprocket 452 at a position midway along the second rotation center shaft 452p.
A chain 451 having an endless track shape is hung on the left and right sides of the distal end side sprocket 453 and the proximal end side sprocket 452. Then, the horizontal slide base 44 is put on the left chain 451 and the right chain 451 from above, and the horizontal slide base 44 is connected to each chain 451 by a connecting jig (not shown).

The drive gear 455 of the second rotation center shaft 452p that connects the left and right base end side sprockets 452 meshes with the first intermediate gear 456, and one end side (left end side) of the first intermediate gear 456 is the first electromagnetic clutch. It can be connected to the second intermediate gear 458s via 457a. The second intermediate gear 458 s meshes with the pinion gear 458 w of the output shaft of the motor 458 installed on the rotation base 35.
The other end side (right end side) of the first intermediate gear 456 is configured to be connectable to a one-way clutch 459 installed on the rotation base 35 via a second electromagnetic clutch 457b.
The first electromagnetic clutch 457a and the second electromagnetic clutch 457b are configured such that when one is on, the other is off.

  That is, when the first electromagnetic clutch 457a is on and the second electromagnetic clutch 457b is off, the first intermediate gear 456 is connected to the second intermediate gear via the first electromagnetic clutch 457a as shown in FIG. 4B. 458s and the connection between the first intermediate gear 456 and the one-way clutch 459 is released. As a result, the rotational force of the motor 458 is shifted to the left and right base end sides via the pinion gear 458w, the second intermediate gear 458s, the first electromagnetic clutch 457a, the first intermediate gear 456, the drive gear 455, and the second rotation center shaft 452p. It is transmitted to the sprocket 452. That is, the motor 458 and the left and right proximal end side sprockets 452 are connected. When the motor 458 rotates in the forward direction, the base end side sprocket 452 rotates counterclockwise as shown by the arrow in FIG. Rotates counterclockwise. As a result, the lateral slide base 44 connected to the upper side of the chain 451 moves forward. Further, when the motor 458 rotates in the reverse direction, the base end side sprocket 452 rotates to the right, whereby the chain 451 moves in the clockwise direction and the tip side sprocket 453 rotates to the right. As a result, the horizontal slide base 44 connected to the upper side of the chain 451 moves backward.

On the other hand, when the first electromagnetic clutch 457a is off and the second electromagnetic clutch 457b is on, the first intermediate gear 456 is connected to the one-way clutch 459 via the second electromagnetic clutch 457b as shown in FIG. And the connection with the second intermediate gear 458s is released. Here, the one-way clutch 459 is a clutch mechanism that transmits rotational force only in one direction, but in this embodiment, as shown in FIG. 5 (A), the base end side sprocket 452 is allowed to rotate clockwise. , It is used in such a way as to prohibit left rotation (rotating force is not transmitted to other members).
That is, when the lateral slide base 44 is moved backward manually, if the proximal end side sprocket 452 rotates to the right by the meshing action with the chain 451, the rotational force is transmitted via the drive gear 455 and the first intermediate gear 456, and the one-way clutch 459. And the one-way clutch 459 rotates counterclockwise. On the contrary, when the lateral slide base 44 is moved forward manually, the one-way clutch 459 is rotationally locked, so that the rotation of the first intermediate gear 456, the drive gear 455, and the base end side sprocket 452 is locked and the lateral slide is performed. Advancement of the base 44 is prohibited.
Thus, the motor 458 of the drive unit 450 of the lateral slide mechanism 40 corresponds to the drive source of the present invention. Further, the state in which the motor 458 and the left and right base end side sprockets 452 are connected by the operation of the first electromagnetic clutch 457a and the second electromagnetic clutch 457b is the automatic method of the present invention, and the one-way clutch 459 and the left and right base clutches are connected. The state where the end side sprocket 452 is connected is the manual method of the present invention. The one-way clutch 459 corresponds to the one-way rotation permission mechanism of the present invention. Furthermore, the left and right proximal end side sprockets 452 correspond to the rotating portion of the present invention. The chain 451 corresponds to the endless track of the present invention, and the sprockets 452 and 453 correspond to the wheel of the present invention.

<About the four-bar linkage mechanism 51 of the lifting mechanism 50>
As shown in FIGS. 7 and 8 and the like, the base end portions of a pair of left and right four-bar linkage mechanisms 51 are connected to the horizontal slide base 44 so as to be vertically rotatable. The four-bar linkage mechanism 51 is a mechanism that raises and lowers the elevating base 55 in a horizontal state, and includes an inner link arm 53 and an outer link arm 52. The base ends of the link arms 52 and 53 are supported by the side portions of the horizontal slide base 44 of the horizontal slide mechanism 40 so as to be vertically rotatable via a support shaft (not shown). Further, the side walls of the elevating base 55 are connected to the distal ends of the link arms 52 and 53 through a support shaft in a state in which the side walls can be vertically rotated.
Further, as shown in FIG. 3, the rotary base 35 is provided with a lifting guide member 57 that supports the left and right outer link arms 52 of the four-bar linkage mechanism 51 from below at the outer positions of the left and right guide rails 41. . The raising / lowering guide member 57 can convert the operation in which the four-bar linkage mechanism 51 moves forward or backward together with the lateral slide base 44 into a downward rotation operation or an upward rotation operation of the four-bar linkage mechanism 51. It is configured. 6 to 8, the lifting guide member 57 is omitted.

<About the outer / inner slide mechanism 70>
On the lift base 55 of the lift mechanism 50, as shown in FIGS. 7, 8, etc., an outer / inner slide mechanism 70 for moving the seat body 10 forward or backward relative to the lift base 55 is provided. As shown in FIG. 2, the outer / inner slide mechanism 70 includes a seat base 75 that supports the seat body 10, a pair of left and right guide rails 74 a fixed to the lower surface side of the seat base 75, and a lift base 55. The slider 74b that slidably supports the guide rail 74a, and a drive unit 76 that is a drive source of the outer / inner slide mechanism 70 are provided.
The drive unit 76 rotates a rack 73 provided parallel to the guide rail 74 a on the lower surface of the seat base 75, a pinion 72 provided so as to mesh with the rack 73 on the lifting base 55, and the pinion 72. And a drive motor 71.

<About the sheet body 10>
As shown in FIGS. 1 and 2, the seat body 10 includes a seat cushion 11 and a seat back 12, and a frame of the seat cushion 11 is connected to a seat base 75 of the outer / inner slide mechanism 70. .
The seat body 10 is provided with a dismounting switch (not shown) for performing the dismounting operation of the seat body 10 and a boarding switch (not illustrated) for performing the riding operation of the seat body 10. Further, the seat body 10 is provided with a changeover switch (not shown) for switching the first and second electromagnetic clutches 457a and 457b of the drive unit 450 of the lateral slide mechanism 40.
Here, the electrical signals of the boarding switch, the getting-off switch, and the changeover switch are input to a vehicle control unit (ECU). The ECU operates the front / rear slide mechanism 20, the rotation mechanism 30, the elevating mechanism 50, and the outer / inner slide mechanism 70, which constitute the vehicle seat S, based on electrical signals from the boarding switch and the getting-off switch. Further, the ECU switches the first and second electromagnetic clutches 457a and 457b of the drive unit 450 in the lateral slide mechanism 40 based on the electrical signal of the changeover switch.

<Operation of vehicle seat S>
First, the operation of the vehicle seat S when a person is seated on the seat body 10 will be described.
When a person is seated on the seat body 10, the first electromagnetic clutch 457a of the drive unit 450 of the lateral slide mechanism 40 is turned on and the second electromagnetic clutch 457b is turned off by operating the changeover switch (FIG. 4 ( B)). Thereby, the rotational force of the motor 458 of the drive unit 450 in the lateral slide mechanism 40 is transmitted to the left and right proximal end side sprockets 452.
In order to move the seat body 10 from this state to the boarding / exiting position outside the passenger compartment, the boarding / exiting opening D of the vehicle C is opened, and then the boarding switch is operated.
Thereby, a rotation signal is output from the ECU, and the rotation mechanism 30 operates in a direction to rotate the seat body 10 counterclockwise. A forward slide signal is output from the ECU in a state where the seat body 10 is rotated counterclockwise by a certain angle. Thereby, in a state where the operation of the rotation mechanism 30 is continued, the front / rear slide mechanism 20 operates in a direction to slide the front / rear slide base 21 forward. That is, the seat body 10 rotates counterclockwise while moving forward from a predetermined position (rotating slide).

When the rotary slide of the seat body 10 is started, a forward signal (downward signal) is output from the ECU to the lateral slide mechanism 40 of the elevating mechanism 50 for a certain period of time, and the lateral slide base 44 moves forward by a certain amount so that the seat The slide lock of the main body 10 is released.
In this way, as shown in FIG. 6, when the seat body 10 rotates about 90 ° and faces the entrance D side, an external slide signal is output from the ECU to the external internal slide mechanism 70 during the rotational slide. Is done. As a result, the outer / inner slide mechanism 70 operates and the seat body 10 moves forward with respect to the lift base 55 of the lift mechanism 50 as shown in FIG. That is, the seat body 10 is swung out of the passenger compartment from the entrance D (outside slide). Then, after the outer slide is started, the rotation mechanism 30 and the front / rear slide mechanism 20 are stopped to complete the rotation slide. In this state, the seat body 10 rotates about 110 ° from the vehicle forward position.

Next, a forward signal (downward signal) is output from the ECU to the lateral slide mechanism 40 of the lifting mechanism 50 during the outer slide. As a result, as shown in FIGS. 4A and 4B, when the motor 458 rotates in the forward direction, the base end side sprocket 452 rotates counterclockwise, thereby moving the chain 451 in the counterclockwise rotation direction and moving the tip end side. The sprocket 453 rotates counterclockwise. As a result, the lateral slide base 44 connected to the upper side of the chain 451 moves forward and presses the four-bar linkage mechanism 51 forward. As a result, as shown in FIG. 8, the four-bar linkage mechanism 51 is rotated downward by the action of the elevating guide member 57, and the seat body 10 is lowered horizontally while moving forward with the elevating base 55. Then, when the seat body 10 reaches the boarding / alighting position, the lifting mechanism 50 is stopped, and a series of operations of the vehicle seat S is completed.
When the seat body 10 on which a person is seated is moved from the getting-on / off position to the vehicle interior, the vehicle seat S is operated in the reverse operation to that described above by operating the boarding switch.

Next, the case where the seat body 10 (empty seat body 10) on which no person is seated is moved from the getting-on / off position to the passenger compartment will be described.
When a person is not seated on the seat body 10, the changeover switch is operated to turn on the second electromagnetic clutch 457b and turn off the first electromagnetic clutch 457a of the drive unit 450 of the lateral slide mechanism 40 (FIG. 5 ( B)). As a result, the base end side sprocket 452 of the drive unit 450 is disconnected from the motor 458, and the base end side sprocket 452 is connected to the one-way clutch 459. Therefore, by pushing the lateral slide base 44 rearward through the four-bar linkage mechanism 51 while lifting the seat body 10, the chain 451 moves in the clockwise direction as shown in FIG. The sprocket 453 and the base end side sprocket 452 rotate clockwise. Further, the right rotational force of the base end side sprocket 452 is transmitted to the one-way clutch 459 so that the one-way clutch 459 rotates counterclockwise. Thereby, the sheet | seat main body 10 can be raised rapidly.
Even if the lifting force of the seat body 10 is loosened in the middle, the reverse rotation of the one-way clutch 459 is locked, and therefore the left-hand rotation of the base end side sprocket 452 is prohibited. That is, the lateral slide base 44 and the four-bar linkage mechanism 51 do not move forward, and movement (lowering) of the seat body 10 in the direction of the boarding / alighting position is prohibited, thereby ensuring safety.
After the seat body 10 is lifted in this way, by operating the boarding switch, the outer / inner slide mechanism 70 operates to retract the seat body 10 into the vehicle interior (inner slide), and the rotation mechanism 30 The slide mechanism 20 operates to return the seat body 10 to a predetermined position.

<Advantages of the vehicle seat S according to the present embodiment>
According to the present invention, when the drive unit 450 (sheet moving device) of the lateral slide mechanism 40 is switched to the manual method, the base end portion of the drive unit 450 that rotates when the sheet main body 10 moves along the movement trajectory. The side sprocket 452 (rotating part of the seat moving device) is connected to the one-way clutch 459, and the movement of the seat body 10 toward the vehicle interior is allowed.
For this reason, for example, after the seated person gets off the seat body 10, the drive unit 450 (seat moving device) of the lateral slide mechanism 40 is switched to the manual method, and the seat body 10 can be moved quickly toward the vehicle interior. It becomes possible. Furthermore, since the seat body 10 can be moved manually toward the vehicle interior, the power consumption of the battery can also be suppressed.
Further, when switching to the manual method, the base end side sprocket 452 (rotating portion of the sheet moving device) of the driving unit 450 of the lateral slide mechanism 40 is connected to the one-way clutch 459 (one-way rotation allowing mechanism). When the seat body 10 is moved in the direction of the passenger compartment, there is no inconvenience that the seat body 10 moves (lowers) in the direction of the getting-on / off position even if the force is removed midway.
In addition, the drive unit 450 (sheet moving device) of the lateral slide mechanism 40 is configured such that the base end side sprocket 452 (rotation unit) of the drive unit 450 is moved by the first and second electromagnetic clutches 457a and 457b to the motor 458 or the one-way clutch. By switching to 459, the system is switched to the automatic system or the manual system.
For this reason, the drive part 450 (sheet | seat moving device) of the horizontal slide mechanism 40 can be easily switched to an automatic system or a manual system.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in the present embodiment, an example in which the drive unit 450 of the lateral slide mechanism 40 includes a chain 451, a distal end side sprocket 453, a proximal end side sprocket 452, and the like has been described. However, instead of the chain 451 and the sprockets 452 and 453, a belt and a pulley can be used. Further, as shown in FIG. 9, the drive unit 450 of the lateral slide mechanism 40 is screwed to the screw shaft 462 that is configured to be rotatable around the axis, and the screw shaft 462 rotates to rotate the screw shaft 462. A nut portion 464 configured to be movable along the screw shaft 462 may be used. In this case, it is necessary to set the lead angle between the screw shaft 462 and the nut portion 464 so that the nut portion 464 can be manually moved along the screw shaft 462. Then, one end side of the screw shaft 462 is configured to be connectable to the motor 458 by the first electromagnetic clutch 457a, and the other end side of the screw shaft 462 is configured to be connectable to the one-way clutch 459 by the second electromagnetic clutch 457b. The drive unit 450 of the lateral slide mechanism 40 can be switched between an automatic method and a manual method.
Moreover, in this embodiment, the example which switches the drive part 450 of the horizontal slide mechanism 40 in the raising / lowering mechanism 50 of the vehicle seat S to the automatic system and the manual system was shown. However, it is also possible to switch the outer / inner slide mechanism 70 of the vehicle seat S between an automatic system driven by a motor and a manual system using a one-way clutch.
Further, although the one-way clutch is exemplified as the one-way rotation permission mechanism, a ratchet mechanism using a gear and a pawl that allows rotation in only one direction can be used instead of the one-way clutch.

10... Seat body 40... Horizontal slide mechanism 44... Horizontal slide base 50... Elevating mechanism 200 ... Sheet moving device 450 ... Drive unit 451 ... Chain (infinite Orbit)
452... Base end side sprocket (rotating part wheel of sheet moving device)
453 ... Tip side sprocket (wheel)
457a ··· First electromagnetic clutch 457b · · Second electromagnetic clutch 458 ··· Motor (drive source)
459 ... One-way clutch (one-way rotation permissible mechanism)
462 ... Screw shaft (rotating part of the sheet moving device)
464 ... Nut

Claims (4)

A vehicle seat including a seat moving device that moves a seat body between a predetermined position in a passenger compartment and an entry / exit position outside the passenger compartment,
The sheet moving device includes an automatic method for moving the sheet body along a predetermined movement locus using a rotational force of a driving source, and manually applying a force to the sheet body, It is configured to be switchable to a manual method for moving along the movement trajectory,
When the sheet moving device is switched to the manual method, a rotating portion of the sheet moving device that rotates when the sheet main body moves along the movement locus is connected to a one-way rotation allowance mechanism, A vehicle seat characterized in that movement of the seat body in a vehicle interior direction is allowed and movement in the reverse direction of the seat body is prohibited. The vehicle seat according to claim 1,
The seat moving device is switched to an automatic method or a manual method by connecting a rotating portion of the seat moving device to the driving source or the one-way rotation permission mechanism by a clutch. The vehicle seat according to claim 2,
The seat moving device includes an endless track hung on a plurality of wheels, and the wheel is configured to be connected to the driving source or the one-way rotation allowance mechanism as the rotating portion. Vehicle seat. The vehicle seat according to claim 2,
The sheet moving device is configured to be screwed to the screw shaft and configured to be movable along the screw shaft by the rotation of the screw shaft, the screw shaft being configured to be rotatable around an axis at a fixed position. With a nut,
The lead angle between the screw shaft and the nut is configured so that the nut can be manually moved along the screw shaft, and the screw shaft serves as the rotation source as the driving source or the one-way rotation allowance mechanism. A vehicle seat characterized in that the vehicle seat is connected to the vehicle.

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